...photoshop is a different beast to version 4, a massive leap indeed...
...a lot of the functions in the latest version are non-destructive functions, meaning you can easily revert or modify an existing adjustment...
...you can import video, 3d meshes, vector objects as smart objects and edit thme on the fly in illustrator, create vector masks, automatically create stitched panoramic images into a single image, use actions to do repetitive tasks to vast numbers of images...
...the list goes on really...
...sure, it is a pricey program, but the technology involved in this program is simply staggering and worthy of the price tag in my view...
...don't however expect to run creative suite on a computer that is lacking in speed or memory, as it seems with each new major release of the creative suite you also need to upgrade your computer (to an entirely new one most probably)...
...future proofing your desktop computer is pretty important if you want to keep in touch with all the enhancements that are always just around the corner...
Andrew